Aromatization of propane over MFI-gallosilicates

C.R. Bayense, A.J.H.P. vd Pol, J.H.C. Hooff, van

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The results of propane aromatization over gallium containing HZSM-5 zeolites are described. Highly dispersed gallium in the zeolite (framework or extra-framework) was found to possess dehydrogenation activity, especially in the presence of strong Brønsted acid sites. The extra-framework gallium was introduced by mildly steaming a H-(Ga) ZSM-5 zeolite or by physically mixing Ga2O3 or a GAPSO-11 molecular sieve with H-(Al) ZSM-5. The higher dehydrogenation rates in the presence of gallium facilitated the formation of carbonaceous products, resulting in higher deactivation rates. A mechanism for hydrogen formation is discussed.
Original languageEnglish
Pages (from-to)81-98
JournalApplied Catalysis
Issue number1
Publication statusPublished - 1991


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